SCIENCE FAIR PROJECT

INSTANT ICE

Carlos Guillermo Molina

6° Grade

COLEGIO MONTESSORRI

Cartagena, Friday29 of July.

2011

INSTANT ICE

JUSTIFICATION

This experiment is very striking and interesting with a little imagination can be even

artistic. To do this you just need sodium acetate, water and a heating pot.

With this experiment we will learn to distinguish between different chemical reactions,

especially neutralization reactions and exothermic reactions.

OBJECTIVES

Prepare instant ice and understand how some chemicals react to others.

To raise awareness of science has many areas to explore and also to make

known that ice can form in different ways.

THEORETICAL

Sodium acetate is the sodium salt of acetic acid. A chemical produced in industrial

quantities economically for a wide range of use. Sodium acetate is used in the textile

industry to neutralize sulfuric acid waste streams, and as photo resist when using aniline

dyes. Also used as a pickling agent in chrome tanning, and helps to retard vulcanization

of chloroprene in synthetic rubber production. It is the chemical that gives flavor to the

fries. Is often added to foods as a preservative in this case is named; di-sodium acetate

and labeled as E262.

For sodium acetate is needed vinegar and baking soda. The vinegar and baking soda

should be mixed in desired amounts. As neutralization reaction will result in us water,

sodium acetate (which will remain in the background) and carbon dioxide (due out in

the form of bubbles). Then to refine the sodium acetate solution simply evaporate, the

residue is sodium acetate.

A neutralization reaction is one in which an acid reacts (or acidic oxide) with a base (or

basic oxide). The reaction is a salt and in most cases water is formed.

MATERIALS • A container

• Baking soda and vinegar (for sodium acetate)

• Water

PREPARATION

• Step 1:

You put vinegar in a pan; once it starts boiling add the baking soda. It is left to

react to stop once you stop to take it out of reaction and white fire left in the

bottom is the Acetate of soda.

• Step 2:

In a saucepan or skillet, heat water until it is boiling. You need as much water as

the ice you want to have. (1lt. water makes approx. 1lt. Ice)

• Step 3:

Dissolve sodium acetate in the pot to saturate the solution (dissolve all of the

maximum amount possible). It's normal to a bit of sediment in the pot.

• Step 4:

Once the solution, pass it to a glass container and put it in the freezer. Your

instant ice is ready. If you touch your finger will start to freeze.

Exothermic reaction occurs when ice forms.

The saturated solution of sodium acetate derives all its heat to the environment and

freezes. This reaction usually takes the bags to warm his hands.

CONCLUSION

Thus we conclude that the properties of substances are those that determine what kind

of chemical reaction occur.